Users Guide
The LLDP organizational TLV passes local destination MAC address information to peer VLT domain devices so they can act as the proxy
gateway. Two congurations are required to enable Proxy Gateway LLDP:
• Global proxy gateway LLDP conguration to enable this feature
• Interface proxy gateway LLDP conguration to enable/disable proxy-gateway LLDP TLV on particular interfaces
• The interface is typically a VLT port-channel which connects to a remote VLT domain
• The new proxy gateway TLV is carried on the physical links under the port channel only
• There should be at least one link connection to each unit of the VLT domain
Following are the prerequisites for Proxy Gateway LLDP conguration:
• LLDP must be globally enabled
• No interface– level LLDP disable CLIs on the interfaces congured for proxy gateway, and you must enable both transmission and
reception
• You must connect both units of the remote VLT domain by the port channel member.
• If you connect more than one port to a unit of the remote VLT domain, it must be completed by the time you enable the proxy gateway
LLDP
• You cannot have other conicting congurations (for example, the no static proxy gateway conguration)
This feature might not operate properly if one of the following conditions is true:
• Any proxy gateway conguration or LLDP conguration is not working
• LLDP packets fail to reach the remote VLT domain devices (due to system down, rebooting, port down or physical link connection)
Sample Congurations for LLDP VLT Proxy Gateway
Apply the following congurations in the Core L3 Routers C and D in the local VLT domain and C1 and D1 in the remote VLT domain:
1 Congure proxy-gateway lldp in VLT Domain CONFIG mode.
2 Congure peer-domain-link port-channel <vlt portchannel ID> in VLT Domain Proxy Gateway LLDP mode. The
VLT port channel is the one that connects the remote VLT domain.
Sample Congurations for Static VLT Proxy Gateway
Apply the following congurations in the Core L3 Routers C and D in local VLT domain and C1 and D1 in the remote VLT domain:
1 Congure proxy-gateway static in VLT Domain CONFIG mode
2 Congure remote-mac-address <mac-address> in VLT Domain Proxy Gateway LLDP mode. Congure the system mac-
addresses of both C and D in C1 and also in D1 in the remote VLT domain and vice versa.
VLT Proxy Gateway
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